Nutrient concentration of sow feed?

Hello, teachers! I have been making sow feed recently. But the nutrient concentration of sows is always high and low. I saw that the nutrient concentration of the newly released sow feed in our country in 2005 is somewhat different from that of NRC. Take the data of egg whites and calcium and phosphorus. The lactation sow feed in our country is 14 minute CA is 0.8, effective P is 0.32, but I looked at the Qingdao sow nutrition conference and said that the protein of lactating sow feed should be 16, and the available phosphorus should be 0.35. Ladies and gentlemen, could you introduce the nutritional concentration of sow feed to Xiao Di here and impart some of your experience? Thank you!-the protein and lysine value of high lean lactating sows are 18% and 1.0%, respectively. -- to see how big the feed intake is, if the feeding amount can meet the nutritional needs of sows at different stages. If you are not sure, press the highest one!-- I heard that the sow feed is not good nowadays. Especially lactation sow feed, what on earth is the reason? -- maybe the nutrition can't keep up!-- the nutrient concentration of sows should be combined with feed intake, and the formula should be adjusted in different seasons in winter and summer. In particular, the multi-mineral and multi-dimensional nutrition concentration of pregnant sows should be high. According to the new national standard, the standard score of fattening pigs is relatively fine, and sows should actually be the same. If the lean meat rate is relatively high and the growth rate is relatively fast, it will not work according to the previous feed. The feed intake of this kind of sow is very low. When the nutrient concentration of the feed is low, the problems such as lactation and self-weightlessness are even more prominent.

So I have always advised farmers not to raise too pure foreign sows, in the case of feed and feeding management, their production performance is worse than the general breeds.

And a lot of matching sows, from the performance of the northeast, are quite good. I would like to ask whether the nutritional requirements of French pigs are higher than those of D, L and Y-- what sows feed pig factories are most concerned about is Summer stool problems and breast-feeding milk and leg problems-Oh, thank you!